Slippery Slope: Pine Tar and Other Obvious Ways Athletes 'Cheat'

New York Yankees starting pitcher Michael Pineda walks off the mound after being ejected from a game against the Boston Red Sox when a foreign substance was discovered on his neck, Fenway Park in Boston, April 23, 2014.

New York Yankees pitcher Michael Pineda was booted from the mound Wednesday night against the Boston Red Sox after he was caught using pine tar to get a better grip of the ball and control his pitches.

In fact, he’s not even the first Major League baseball player to pull tricks on the field. Here’s a look at some of the ways major athletes break the rules – and why they’re no good at hiding it:

Doctored Balls, Corked Bats

Baseball fans can’t forget the moment Minnesota Twins pitcher Joe Niekro tried to casually toss a nail file and piece of sandpaper he used to scuff the ball from his pockets during a 1987 game -- a failed feat famously captured on video.